BRS RENAL PHYSIOLOGY EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED
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BRS PHYSIOLOGY
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BRS PHYSIOLOGY
BRS RENAL PHYSIOLOGY EXAM QUESTIONS AND ANSWERS WITH COMPLETE SOLUTIONS VERIFIED
TBW is what % of body weight?
60%
Intracellular fluid is what fraction of TBW?
2/3
What are the major cations of ICF?
K+ and Mg+
What are the major anions of ICF?
protein and organic phosphates
Extracellular...
brs renal physiology exam questions and answers wi
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BRS RENAL PHYSIOLOGY EXAM QUESTIONS AND ANSWERS
WITH COMPLETE SOLUTIONS VERIFIED
TBW is what % of body weight?
60%
Intracellular fluid is what fraction of TBW?
2/3
What are the major cations of ICF?
K+ and Mg+
What are the major anions of ICF?
protein and organic phosphates
Extracellular fluid is what fraction of TBW?
1/3
What is the major cation of ECF?
Na+
What is the major anion of ECF?
Cl- and HCO3-
Plasma is what fraction of ECF?
1/4
What are the major plasma proteins?
albumin and globulins
Interstitial fluid is what fraction of ECF?
3/4
T/F: Interstitial fluid is like plasma but with little protein and is called an
ultrafiltrate of plasma
True
What is the 60-40-20 rule?
TBW is 60% of body weight
ICF is 40% of body weight
ECF is 20% of body weight
,What substances are used to measure TBW?
Tritiated water and D20
What substances are used to measure ECF?
Sulfate, inulin and mannitol
What substances are used to measure plasma?
RISA and Evans blue
What substances are used to measure interstitial fluid?
indirectly via ECF-plasma vol
What substances are used to measure ICF?
indirectly via TBW-ECF
At steady state, ECF osmolarity and ICF osmolarity are?
equal
Which solutes do NOT cross cell membranes and remain confined to the ECF?
NaCl and mannitol
What happens to ECF vol, ICF vole, ECF osmolarity, Hct and Serum [Na+] during
isosmotic volume expansion?
ECF vol: +
ICF vol: no change
ECF osmolarity: no change
Hct: -
Serum [Na+]: no change
What happens to ECF vol, ICF vole, ECF osmolarity, Hct and Serum [Na+] during
isosmotic volume contraction?
ECF vol: -
ICF vol: no change
ECF osmolarity: no change
Hct: +
Serum [Na+]: no change
What happens to ECF vol, ICF vole, ECF osmolarity, Hct and Serum [Na+] during
hyperosmotic volume expansion?
, ECF vol: +
ICF vol: -
ECF osmolarity: +
Hct: -
Serum [Na+]: +
What happens to ECF vol, ICF vole, ECF osmolarity, Hct and Serum [Na+] during
hyperosmotic volume contraction?
ECF vol: -
ICF vol: -
ECF osmolarity: +
Hct: no change
Serum [Na+]: +
What happens to ECF vol, ICF vole, ECF osmolarity, Hct and Serum [Na+] during
hyposmotic volume expansion?
ECF vol: +
ICF vol: +
ECF osmolarity: -
Hct: no change
Serum [Na+]: -
What happens to ECF vol, ICF vole, ECF osmolarity, Hct and Serum [Na+] during
hyposmotic volume contraction?
ECF vol: -
ICF vol: +
ECF osmolarity: -
Hct: +
Serum [Na+]: -
What are examples of isosmotic volume expansion?
isotonic NaCl infusion
What are examples of isosmotic volume contraction?
diarrhea
What are examples of hyperosmotic volume expansion?
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